diff --git a/doxygen-public.conf b/doxygen-public.conf
index a900a5c1f9..2f1e401542 100644
--- a/doxygen-public.conf
+++ b/doxygen-public.conf
@@ -905,7 +905,7 @@ RECURSIVE              = YES
 # Note that relative paths are relative to the directory from which doxygen is
 # run.
 
-EXCLUDE                = ./src/audio/libxm/ ./src/compress/lzh5.c ./src/fatfs/ ./src/video/pl_mpeg/ ./src/GL/ ./src/video/ ./include/mpeg2.h
+EXCLUDE                = ./src/audio/libxm/ ./src/audio/opus ./src/compress/lzh5.c ./src/fatfs/ ./src/video/pl_mpeg/ ./src/GL/ ./src/video/ ./include/mpeg2.h
 
 # The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
 # directories that are symbolic links (a Unix file system feature) are excluded